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J Comp Physiol A Neuroethol Sens Neural Behav Physiol

Title:		"What do oysters smell? Electrophysiological evidence that the bivalve osphradium is a chemosensory organ in the oyster, Magallana gigas"
Author(s):		Rato A; Joaquim S; Matias D; Hubbard PC;
Address:		"Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal. ana.rato@ipma.pt. Department of Sea and Marine Resources, Portuguese Institute for Sea and Atmosphere (IPMA, I.P.), Av. 5 de Outubro s/n, 8700-305, Olhao, Portugal. ana.rato@ipma.pt. Department of Sea and Marine Resources, Portuguese Institute for Sea and Atmosphere (IPMA, I.P.), Av. 5 de Outubro s/n, 8700-305, Olhao, Portugal. Interdisciplinary Centre of Marine Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixoes, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal. Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal"
Journal Title:		J Comp Physiol A Neuroethol Sens Neural Behav Physiol
Year:		2023
Volume:		20230107
Issue:		3
Page Number:		391 - 401
DOI:		10.1007/s00359-022-01608-4
ISSN/ISBN:		1432-1351 (Electronic) 0340-7594 (Print) 0340-7594 (Linking)
Abstract:		"The sensing of chemical cues is essential for several aspects of bivalve biology, such as the detection of food and pheromones. However, little is known about chemical communication systems in bivalves or the possible role of the osphradium as a chemosensory organ. To address this, we adapted an electrophysiological technique extensively used in vertebrates-the electro-olfactogram-to record from the osphradium in the Pacific oyster, Magallana gigas. This technique was validated using amino acids as stimulants. The osphradium proved to be sensitive to most proteinogenic L-amino acids tested, evoking tonic, negative, concentration-dependent 'electro-osphradiogram' (EOsG) voltage responses, with thresholds of detection in the range of 10(- 6) to 10(- 5) M. Conversely, it was insensitive to L-arginine and L-glutamic acid. The current study supports the hypothesis that the osphradium is, indeed, a chemosensory organ. The 'electro-osphradiogram' may prove to be a powerful tool in the isolation and characterization of pheromones and other important chemical cues in bivalve biology"
Keywords:		Animals *Smell *Ostreidae/metabolism Amino Acids/metabolism Electrophysiological Phenomena Pheromones/metabolism Amino acids Bivalve Chemoreception EOsG Electrophysiology;
Notes:		"MedlineRato, Ana Joaquim, Sandra Matias, Domitilia Hubbard, Peter C eng Research Support, Non-U.S. Gov't Germany 2023/01/08 J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2023 May; 209(3):391-401. doi: 10.1007/s00359-022-01608-4. Epub 2023 Jan 7"